Viewing Area : 3.94" X 2.56"

Best in Class Optical Clarity 1/1/1/1, Dual Adjustable Shade Ranges: 4-8 / 9-13, Grind / Weld Modes, 4 Independent Sensors, Internal Controls, Adjustable Sensitivity, Adjustable Delay, Lightweight - 460g (16.2 oz), Switching Speed 1/30,000 sec., Suitable for Low Amp TIG Applications Down to 5 Amps, Standard Cover Plate 4-1/2" X 5-1/4" (114.5mm X 133.35mm), Suitable for Full Respirator, Mag Lens Compatible, Ultimate Comfort Headgear